7/30/2023 0 Comments Postgresql cast integer to moneyString, StringFixedLength, AnsiString, AnsiStringFixedLengthġ UTC DateTime is written as timestamp with time zone, Local/Unspecified DateTimes are written as timestamp without time zone. If none of the above is set, the backend type will be inferred from the CLR value type.If the parameter's DbType is set, it is used.If the parameter's DataType is set, it is used.If the parameter's NpgsqlDbType is set, it is used.There are three rules that determine the PostgreSQL type sent for a parameter: These can be retrieved by calling NpgsqlDataReader.GetBoolean(), GetByte(), GetDouble() etc. NET type if there is no specialization.įinally, the third column specifies other CLR types which Npgsql supports for the PostgreSQL data type. NpgsqlDataReader.GetProviderSpecificValue will return a value of a data type specified in the Provider-specific type column, or the Default. NET type column specifies the data type NpgsqlDataReader.GetValue() will return. Consider using NodaTime's Period type, or NpgsqlInterval. See the breaking change note for more info.Ģ In versions prior to 6.0 (or when Npgsql.EnableLegacyTimestampBehavior is enabled), reading a timestamp with time zone as a DateTimeOffset returns a local offset based on the timezone of the server where Npgsql is running.ģ PostgreSQL intervals with month or year components cannot be read as TimeSpan. Long, byte, short, int, float, double, decimalīyte, short, int, long, float, double, BigInteger (6.0+)ġ In versions prior to 6.0 (or when Npgsql.EnableLegacyTimestampBehavior is enabled), reading a timestamp with time zone returns a Local DateTime instead of Utc. Provider-specific types are returned by NpgsqlDataReader.GetProviderSpecificValue().īyte, sbyte, int, long, float, double, decimalīyte, short, long, float, double, decimal.You can read as other types by calling NpgsqlDataReader.GetFieldValue().The default type is returned when using NpgsqlCommand.ExecuteScalar(), NpgsqlDataReader.GetValue() and similar methods.The following shows the mappings used when reading values. spatial support for PostGIS), these are listed in the Types menu. Note also that several plugins exist to add support for more mappings (e.g. Note that in addition to the below, enum and composite mappings are documented in a separate page. The following lists the built-in mappings when reading and writing CLR types to PostgreSQL types.
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